Windows Presentation Foundation

I have a textBox on a form. When the user presses the Alt key and then the Print screen keys and upon the up of the
print screen key it adds a number to the textBox. That all works good. However when the application loses focus it does not
work. The number does not increment in the textBox when the user presses the Alt key and the the print screen key.
So I have some code I put together and it's doing nothing. Here it is below. If someone can give some help on this it would
be greatly appreciated.
private void TextBoxLostKeyboardFocus(object sender, System.Windows.Input.KeyboardFocusChangedEventArgs e)
{
int count = 0;
count++;
{
try
{
if (count == 0)
textBox1.Text = "0";
else
{

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Hi all,
I have a large WPF project with many separated resource files for each custom control in the project. All was fine until a couple of weeks ago when I tried to open up the application in Blend. When I try to open any .XAML file I get an error for each element
saying:
(Element Name) is not supported in a windows presentation foundation (WPF) project.
This is for every single WPF element throughout the entire project. I don’t know what was changed as a lot of work happened in between openings in Blend.
We are using a .NET 4 solution in the Any CPU Solution Platform configuration.
Has anyone experienced this before? Has anyone got a solution?
Thanks people. I look forward to hearing back from you.
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